239:
into a negative recess in the receiver. There are not six matching negative shaped (concave) recesses in the receiver. That would be very hard to practically produce at the required precision level. Instead there is a simple continuous groove machined for the six ball bearings to lock into. The continuous semi-round groove in conjuncion with the barrel positions the bolt to the front and back and regulates a practically achievable headspace during production. The lockup strengthens with increased chamber pressure. The plunger retracts when the bolt handle is pulled back, allowing the locking bearings to retract into the bolt body so the bolt can open. The bolt can be classified as a semi-rigid type, since the locking elements are movably mounted on the bolt.
231:
45:
293:(12.7×99mm NATO) cartridge. After examening the remotely fired rifle the SR 30 extractor turned out to be damaged as high pressure gases out of ruptured cartridge cases were relieved out of the action, and the bolt was deformed rendering the rifle unusable. The bolt was however retained in the rifle during these tests avoiding a catastrophic failure of parts unintentionally moving backwards towards the user type.
252:
The bolt handle can be placed in three positions: (1) Open, (2) Locked and uncocked, and (3) Locked and cocked. By pressing the bolt handle fully forward to position 3 the user can manually cock the action just before firing. When the user chooses not to fire manually pulling the bolt handle backward
238:
The mechanism uses 6 ball bearings symmetrically positioned around the circumference of the bolt head as locking elements. When the bolt handle is pushed forward, it forces a central plunger down the interior of the bolt body, forcing the 6.5 mm (0.256 in) diameter ball bearings out to lock
305:
straight-pull rifle introduced in early 2021 features a similar locking mechanism as the SR 30. Besides differences in the applied control mechanisms a major technical difference between the locking mechanisms of the Heym SR 30 and Savage
Impulse rifles is that the 6 'hexlock' hardened steel locking
284:
calculated/predicted peak chamber pressure tests of 1,000.0 MPa (145,040 psi; 10,000 bar) (a 241% overload) and 1,070.0 MPa (155,190 psi; 10,700 bar) (a 258% overload) by firing intentionally incorrectly loaded .30-06 Springfield cartridges. These pressure levels
314:
and the possibility for the user to switch bolts and barrels to use different chamberings when such parts become available. At the introduction three hunting orientated Savage
Impulse model variants were available. Their listed weights vary between
265:(5.6×15mmR) chambered Anschütz 1827 Fortner are located at the back of the bolt. As the commercial introduction of the Heym SR 30 occurred within 20 years after 1984, Peter Fortner junior's patent at the time had not expired.
269:
260:
rifle, also designed by Peter
Fortner junior. Peter Fortner junior patented the in the Anschütz 1827 Fortner used locking mechanism in 1984. Unlike the Heym SR 30 six ball bearings the seven ball bearings in the
335:
The rifle is offered with two trigger options, either a shotgun style trigger set at 1600 grams or a set trigger set to 1100 grams. To activate the lighter release, the set trigger must be pushed forward.
323:). In 2022 a dedicated long range or precision model using an adjustable aluminum chassis stock and detachable box magazine became available that is offered in chamberings up to the high bolt thrust
484:
for fixing the barrel to the receiver. Barrel change must be performed by a competent gunsmith, and consists of setting the headspace as well as fitting the recoil lug between the barrel and stock.
306:
bearings of the Savage
Impulse bolt head, lock into a machined half-round recess of a steel barrel extension, allowing the use of a receiver made of mechanically less robust but lighter
755:
714:
256:
The locking mechanism was designed by Peter
Fortner junior. A preceding example of a semi-rigid bolt lock using ball bearings as locking elements is the
245:
is performed by retracting the bolt handle, which uses leverage from the opposite side of the bolt to swing the handle to the open position, giving a
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The Heym High
Performance Precision rifle variant is guaranteed by the factory to deliver a five shot group of 20 mm at 100 meters (0.2
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The rifle is available in the two main configurations SR 30 N (normal cartridges) and SR 30 G (larger cartridges).
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piezo pressure of 800.0 MPa (116,030 psi; 8,000 bar). Websites report on a Heym SR 30 rifle chambered in
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The rifle comes with a hammer forged barrel made in-house at Heym. The SR 30 uses traditional
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The rifle is also available in a smaller Mini
Calibre action length for the chamberings
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SHOT 2022 – Hands on with Savage’s New
Impulse Elite Precision and Model 64 Precision
693:
Savage Arms
Introduces Its First Straight Pull Rifle: IMPULSE Published on 01-05-2021
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Classic, Classic Keiler, Premium, Classic
Concord, Super Classic, Royal, Grand Royal
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Diving into the Details of the New Impulse from Savage Arms by J.Baker 01-05-2021
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Heym states they successfully had the SR 30 locking mechanism tested by the
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DE3432537A1 Repeater rifle, especially as a sporting rifle, such as for biathlon
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The Heym SR 30 G (Groß meaning large) is available chambered for
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496:). This is equivalent to 0.72 inches at 100 yd, or just below 0.69
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Heym SR 30 Repetierbüchse mit RWS HIT im Praxis-Test - all4shooters.com
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and the 258% overload comes near the bolt thrust exhibited by a
816:
Heym SR30: Straight Pull Ball-Bearing Lock? – Forgotten Weapons
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Heym SR30 straight-pull rifle review review - Shooting UK
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to position 2 uncocks the action again for safe carry.
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The Heym SR 30 N is available chambered for
222:. The rifle is also available in a left hand version.
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558:Straight to the point | Sporting Rifle magazine
797:HEYM High-Performance Precision Rifle (HPPR)
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737:
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272:accredited Suhl proofhouse loaded up to a P
744:Heym SR30 Straight Pull Rifle - Revivaler
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547:Heym SR30 Straight Pull Rifle - Revivaler
285:generate over double the maximum allowed
310:billet aluminum with an integral 20-MOA
234:Disassembled bolt of the Heym SR 30
229:
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660:Savage Arms Impulse Rifle - First Look
225:
625:"Heym SR30 Trykktest Heym is tough"
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671:Welcome To American Straight-Pull
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33:Straight-pull bolt action rifle
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569:Heym SR30 Straight Pull Rifle
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197:Open sights, or prepared for
580:Patent DE3432537A1 (expired)
529:List of straight pull rifles
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756:"Endverbraucher Heym 2019"
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811:Heym SR 30 Repetierbüchse
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39:Place of origin
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726:IMPULSE ELITE PRECISION
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16:German repeating rifle
682:Savage Impulse Manual
258:Anschütz 1827 Fortner
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836:Straight-pull rifles
247:mechanical advantage
65:Peter Fortner junior
212:straight-pull rifle
174:Several, see below.
649:Heym hält (German)
602:Heym Prospekt 7.03
278:.30-06 Springfield
243:Primary extraction
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155:(19.69–24.02
136:(43.70–44.88
57:Production history
831:Rifles of Germany
325:.338 Lapua Magnum
226:Locking mechanism
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132:1,110–1,140
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365:6.5mm Creedmoor
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297:Similar Designs
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208:Heym SR 30
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87:2021 equivalent
83:1,850 - 25,700
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303:Savage Impulse
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108:Specifications
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770:. Retrieved
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633:. Retrieved
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520:Mauser M1996
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449:.338 Win Mag
441:.300 Win Mag
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214:produced in
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148: length
95:1998-current
70:Manufacturer
460:Mini action
437:7mm Rem Mag
287:bolt thrust
199:scope mount
825:Categories
772:2019-07-03
635:2021-05-09
535:References
453:.375 Ruger
340:Cartridges
510:Blaser R8
488:Precision
282:QuickLOAD
170:Cartridge
504:See also
469:.223 Rem
465:.222 Rem
445:8×68mm S
433:.300 WSM
429:.270 WSM
425:6.5×68mm
413:9.3×62mm
409:8.5×63mm
405:8×64mm S
395:, 30-06
389:.308 Win
377:.270 Win
373:6.5×64mm
369:6.5×55mm
357:.243 Win
100:Variants
92:Produced
62:Designer
515:Lynx 94
476:Barrels
401:8×57 JS
353:.22-250
331:Trigger
308:7075-T6
291:.50 BMG
216:Germany
51:Germany
393:.30-06
385:7×64mm
381:7×57mm
361:.25-06
270:C.I.P.
263:.22 LR
194:Sights
180:Action
146:Barrel
129:Length
48:
766:(PDF)
759:(PDF)
210:is a
494:mrad
467:and
451:and
411:and
301:The
220:Heym
206:The
113:Mass
74:Heym
29:Type
498:moa
274:max
218:by
85:EUR
827::
732:^
522:/
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321:kg
317:lb
249:.
157:in
153:mm
138:in
134:mm
122:lb
118:kg
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124:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
